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Octagon devices have a Lattice iCE40 FPGA connected over SPI. Configure it. Signed-off-by: Gustave Monce <gustave.monce@outlook.com> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org> Link: https://lore.kernel.org/r/20210131013853.55810-13-konrad.dybcio@somainline.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>